I have a daily US swaps data here for 2020 https://easyupload.io/yh4rnd . I have run PCA on standardized data and got PCA matrix (and basic statistics): [![enter image description here][1]][1] [![enter image description here][2]][2] I also have such hypothetical portfolio that in this example is making +$195k. [![enter image description here][3]][3] Question: How do I attribute this P&L to each principal component, such that the total P&L number equals +$195k? [1]: https://i.sstatic.net/X8p9N.png [2]: https://i.sstatic.net/8sZ23.png [3]: https://i.sstatic.net/jiuxn.png